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The hair-like structures on female cannabis flowers that collect pollen and change color as the plant matures.
Pistils are the hair-like structures that extend from the calyx of female cannabis flowers. Technically, the visible hairs are stigmas (the pollen-receiving part of the pistil), though cannabis culture universally refers to them as pistils. These structures play a crucial role in reproduction and are one of the most visible indicators of plant maturity.
Function and Appearance
The primary function of pistils is to catch airborne pollen from male cannabis plants for reproduction. Fresh pistils emerge as bright white, wispy hairs that protrude from each calyx. As the flower matures, pistils gradually change color, progressing through orange, red, and brown as they oxidize and age. This color change is one of the indicators growers use alongside trichome maturity to determine harvest timing. Most growers look for 70% to 90% of pistils to have changed color before harvesting.
What Pistils Tell Consumers
For consumers evaluating cannabis at a dispensary, pistils provide visual cues about the flower. A mix of orange and white pistils suggests flower harvested near peak maturity. Densely packed pistils indicate well-developed flower structure. However, pistil color alone is not a reliable indicator of potency or quality. Some strains naturally produce more pistils than others, and environmental factors can affect their development. Trichome coverage and lab test results are more reliable quality indicators than pistil appearance alone.